However, the house edge can vary significantly depending on the number of decks of cards that are used per game and the rules that are in place, with a 0.5% house edge typically reserved for fewer deck games with player-friendly rules.Īs more decks of cards are added, the house edge becomes higher and higher, growing even further with the introduction of new rules that have been implemented by land based casinos to give the house an extra advantage (for example, excluding doubling on soft hands, offering lower payouts for natural blackjacks, unfair Soft 17 rules, etc). When optimal blackjack strategy is employed, the theoretical house edge for a game of 21 is less than 1% depending on the rules in play, making this the most player friendly of all casino card games.
The higher the deck, the higher the house edge.
